---
id: CVE-2026-122132
title: go-chi chi 5.2.2 through 5.5.0 Open Redirect via RedirectSlashes Middleware
summary: >-
  go-chi chi 5.2.2 through 5.5.0 contains an open redirect vulnerability in the
  RedirectSlashes middleware that allows attackers to redirect victims to
  external hosts by embedding tab characters in request paths. Attackers can
  craft links …
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-601
vendor: go-chi
product: chi
affected:
  - chi >= 5.2.2 <= 5.5.0
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-05T19:40:43.390519Z'
exploitAvailable: true
published: '2026-11-04'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T19:41:43.032Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-122132'
references:
  - url: 'https://github.com/go-chi/chi/pull/1238'
    label: 'Pull Request #1238'
  - url: 'https://github.com/go-chi/chi'
  - url: 'https://github.com/go-chi/chi/security/advisories/GHSA-mqqf-5wvp-8fh8'
    label: GitHub Security Advisory (GHSA-mqqf-5wvp-8fh8)
  - url: 'https://github.com/go-chi/chi/blob/v5.5.0/middleware/strip.go#L41-L69'
  - url: >-
      https://www.vulncheck.com/advisories/go-chi-chi-5.2.2-through-5.5.0-open-redirect-via-redirectslashes-middleware
    label: >-
      VulnCheck Advisory: go-chi chi 5.2.2 through 5.5.0 Open Redirect via
      RedirectSlashes Middleware
tags:
  - cve.org
  - exploit-available
epss: 0.00269
epssPercentile: 0.19214
ingestedAt: '2026-11-05T22:38:31.553Z'
---

## Overview

go-chi chi 5.2.2 through 5.5.0 contains an open redirect vulnerability in the RedirectSlashes middleware that allows attackers to redirect victims to external hosts by embedding tab characters in request paths. Attackers can craft links with a URL-encoded tab, which browsers strip from the 301 Location header and resolve as a protocol-relative URL, bypassing the fix for CVE-2025-69725.

## Affected

- `chi >= 5.2.2 <= 5.5.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.